Bug 483120

SUMMARY
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STEPS TO REPRODUCE
1. 
2. 
3. 

OBSERVED RESULT


EXPECTED RESULT


SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma: 
(available in About System)
KDE Plasma Version: 
KDE Frameworks Version: 
Version 5.115.0
Qt Version: 
Qt Version 5.15.12 (built against 5.15.12)
Friedrichsmeier, T. & the RKWard Team (2022). RKWard: Frontend to the R statistics language. Version 0.7.5. https://rkward.kde.org

ADDITIONAL INFORMATION
---Problem description---
Please fill in the missing bits *in English*.

I encountered the error message quoted below. Additionally, I saw the following symptoms:
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What - in detail - did you do directly before you encountered this problem?
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When you try to repeat the above, does the problem occur again (no, sometimes, always)?
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If applicable: When doing the same thing in an R session outside of RKWard, do you see the same problem?
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Do you have any further information that might help us to track this problem down? In particular, if applicable, can you provide sample data and sample R code to reproduce this problem?
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RKWard is available in many different packagings, and sometimes problems are specific to one method of installation. How did you install RKWard (which file(s) did you download)?
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---Error Message---
Message code: r_engine_has_died
Connection closed unexpectedly. Last error was: QLocalSocket: Remote closed
The R backend will be shut down immediately. This means, you can not use any more functions that rely on it. I.e. you can do hardly anything at all, not even save the workspace (but if you're lucky, R already did that). What you can do, however, is save any open command-files, the output, or copy data out of open data editors. Quit RKWard after that. Sorry!

---Session Info---
RKWard version: 0.7.5
KDE Frameworks version (runtime): 5.115.0
KDE Frameworks version (compile time): 5.109.0
Qt version (runtime): 5.15.12
Qt version (compile time): 5.15.10
Using QWebEngine for HTML rendering
Local config directory: /home/rollom/.config
RKWard storage directory: /home/rollom/.rkward/
Backend version (as known to the frontend): 4.3.3

Debug message file (this may contain relevant diagnostic output in case of trouble):
/tmp/rkward.frontend
- backend not available or rk.sessionInfo() canceled -

[1] "230203RM_MPRAGE-GRAPPA2-1x1x1-208sl-100pcFOV_20230203164527_21.nii"
[2] "MRI-work.RData"                                                    
[3] "MRI-work.RData.rkworkplace"                                        
> image<-readNifti(file(nameRM))
Error in readNifti(file(nameRM)) : 
  File name(s) must be specified in a character vector
> mode(nameRM)
[1] "character"
> nameRM
[1] "230203RM_MPRAGE-GRAPPA2-1x1x1-208sl-100pcFOV_20230203164527_21.nii"
> image<-readNifti(file="230203RM_MPRAGE-GRAPPA2-1x1x1-208sl-100pcFOV_20230203164527_21.nii")
> dim(image)
[1] 208 256 256
> pixdim(image)
[1] 1 1 1
> pixunits(image)
[1] "mm" "s" 
> view(image)
Setting window to (0, 240)
Error: C stack usage  46892866892684 is too close to the limit